Fountain pen



s. M. s'AGER June 7,` 193s.

FOUNTAIN PEN Filed July 1o, 1937 l `ll Il IIIIIIII UNITED STATES aliarse mfr-Entferner -r'ooNrAmTrlzN summum. Sager; Hubbard' woods, nt Application July 1o, 1937, seria No. masts 2o claims. (cl,- izo-ui u The present invention relates to an improved type of fountain pen and more particularly to a fountain pen having a filling unit engaged in one end of'the fountain pen barrel adjacent the inner end of the ink intake tube, said lling unit including a resilient rubber-like bulbous structure collapsible by means of a plunger or operating stem which normally is adapted to be telescoped or disposed axially within lthe bulbous structure to conserve space, thereby affording an arrangement for providing additional ink capacity in the ink chamber of the fountain pen barrel. I

It is an object of this invention to provide a fountain pen with an improved filling unit engaged within one end of the fountain pen barrel and which is actuatable by means of a plunger which normally projects downwardly into a bulbous collapsible ller means but which may be easily moved outwardly into a position to per mit reciprocation thereof to actuate the bulbous means to cause lling of the fountain pen barrel.

Another object of the invention is the provision of a fountainpen having a filling unit engaged in one end of the foutain pen barrel, said lllng unit consisting of a bulbous structure having associated therewith. an operating plunger which normally projects downwardly into one end of the bulbous structure and which may be moved outwardly through the end of the bulbous structure leaving the major portion of the plunger projecting from the end of the fountain pen bar- Arel to facilitate operation of the bulbous structure to cause filling of the fountain pen.

It is also an object of this invention to provide a fountain pen with a filling unit in one end of the fountain pen barrel, said unit having an operating plunger which normally is axially disposedwithin the lling unit to provide a construction wherein the capacity of the ink chamberv of the fountain pen barrel may be increased or wherein the overall length of the fountain pen may be decreased without decreasing the caf paeity of the ink chamber.

It is an important object ofthis invention to provide an improved type of fountain pen including a barrel having an ink guard formed on one end thereof through which a feed bar and pen point project for engagement in a section I a plunger which normally projects axially into the bulbous structure and which is adapted to be moved into an outer operating position projecting from the end of the` barrel to seal..one end of and actuate thebulbous structure to cause 5 the ink chamber of the fountain pen to be filled with ink. Y

Other and lfurther important objects of this invention will be apparent from the disclosures inthe specification and the accompanying draw- 10 ing.` Y i The invention (in preferred forms) is illustrated in the drawing and hereinafter more fully described.

On the drawing: Y 15 Figure l is a central longitudinal section of an improved fountain pen embodying` the principles of this invention and clearly illlustrating an improved illler unit engaged in one end of the fountain pen barrel showing the plunger mecha- 20 nism in closednormal position with the plunger head forming a finished closurefor one end of the fountain pen barrel; said fountain pen being illustrated' with the fountain pen cap omitted.

Figure 2 is an enlarged fragmentary longitudi- 25 nal sectional view of the fountain pen filler unit engaged in one end of the fount pensbarrel and illustrating in full lines-th outermost 6`T\`\-f\Y erating position of the plunger mechanism andshowing in dotted lines the operation of the plunger mechanism and the resultant collapse of the bulbous lling structure.

Figure 3 illustrates an enlarged fragmentary longitudinal section through one end of a modified form of a fountain pen including a modified form of filling unit which has a plunger mechanism, the plunger stem of which normally projects into the bulbous structure permitting the plunger'head `or cap to engage one end of the fountain pen barrel, said figure furthermore illustrating., in dotted lines, the outermost position of the plunger mechanism readyfor opera tion of the bulbous filling structure..

4As shown on the drawing:- .In the illustration ofthe improved fountain pen lshown in Figure 1, the fountain pen cap has been omitted. `The reference numeral l indicates a fountain pen barrel which is open at both ends. Integrally forming a partof one end of the fountain pen barrel is a fountain pen section 2 having integrally-formed on the 'outer end thereof an ink guard 3. Projecting through the link guard and into the fountain pen section 21s a -feed bar l 4and a pen pointi. The inner end of the feedbar l is provided with a recessfor 55 receiving one end of an ink intake and air tube 8. The end of the ink intake tube 6 seating in the feed bar 4 communicates with a radially directed passage 1,.the outer end of which communicates with the ink feed ducts or grooves provided in the feed bar 4. The intake tube 6 projects into the ink chamber 8 of the fountain pen barrel to within a short distance of au improved fountain pen lling unit which is engaged in the end of the fountain pen barrel opposite the ink guard end.

Formed in the barrel I is a shoulder il against which the inner end of the filler unit is seated. The filling unit comprises la double bulb-'like rubber bellows open at both ends and consisting of a lower or.small bulb section I8, open at both ends, and a large upper bulb section I I integrally formed on one end of the bulb section I0. Integrally formed on the small bulb section I is a base I2 constructed of rubber or other suitable material with the bottom of the Abase seated against the shoulder 9 within the ink barrel I. The base of the 'filler unit is provided with an axial opening I3 and with an inner groove I4. Seated in the groove I4 of the base I2, to expand the same intora tight seal with the interior of the barrel I, is a closure disc or plate I5 constructed of hard rubber or other suitable material and having a center aperture or opening I8 providing a valve seat at I'I. Molded or otherwise secured in the outer end of the large bulb section II is a sleeve or bushing I8, the interior of which is i threaded.-

. The end of the barrel I in which the filling unit is engaged, is interiorly threaded at I9 for the reception of an exteriorly threaded "enclosure disc or plug 20 which is centrally passaged at 2| and which is also provided with a plurality of recesses'or pockets22 in the outer surface thereof to facilitate engagement therewith of a suitable tool for securing the closure plug 20 in position. Movably projecting throughthe passage 2I in the closure plug 20 isan exteriorly threaded plunger stem 23 which threads downwardly through the threadedopening in the bushing VI8. and has a double valve head 24 formed or secured on the inner end thereof within the multiple bulb bellows. 'I'he double valve head 24 is.provided with a` lower valve surface 25 and a conical upper vvalve surface 28.. The lower valve surface 25 is adapted to seat against the valve seat I1 of the disc I5 when the plunger stem is in its normal closed position, as illustrated in Figure 1, to cause the valve head 24 to close the aperture I6 in the disc I5. When the threaded valve stem 23 is threaded outwardly through the interiorly threaded bushing I8 into the full line position of Figure 2, the outer valve surface 28 of the valve head 24 is moved into an airtight fit with a valve seat 21 formed on the interior of the large bulb section II Aadjacent the bushing I8, as clearly illustrated in Figure 1. It will thus be noted that when the valve head 24 of the plunger mechanism-is in either its innermost or 1. The plunger actuating head 2l may be of any selected shape or design to furnish a finished end for the lnk barrel I.

Normally, the plunger mechanism of the filling unit is threaded inwardly into the position illustrated in Figure 1 projecting axially through the double bulb bellows with the plunger valve head 24 having the valve surface 25 thereof seating against the valve seat I1 of the disc I5, thereby shutting oif communication between the ink chamber 8 and the interior of the double bulb bellows. WhenV it is desired to operate the lling mechanism for the purpose of filling the cham-l ber 8 withl ink, it is only necessary to rotate the plunger operating head 28 to cause the plunger stem 23 to be threaded outwardly through the bushing I8 from the position illustrated in'Figure Al into the full line4 position illustrated in Figure 2 until the valve surface 26 of the valve head 24 seats against the valve seat .21 provided in the bulb section- II. With the plunger stem 23 in its outermost position as'shown in Figure 2, the feed bar '4 andpen point 5 are dipped into a supply of ink, and the plunger stem 23 is reciprocated with the plunger stem 23 slidably moving through the closure plug 20. Reciprocation of the plunger stem 23 causes the outer end of the large bulb section I I to be alternately moved, from the full line position of Figure 2 into the dotted line position thereby causing ink to bedrawnl from the ink supply upwardly through the feed bar 4' through the intake tube 6 to be discharged in'to the link chamber 8 of the fountain pen barrel. Operation of the lling 4unit may be continued until the fountain peri barrel is filled with a desired supply of ink. f After a filling. operation of the fountain pen, it is only necessary to thread the valve stem- 23 downwardly through the bushing I8, from the full line positionof Figure 2, to the full line position of Figure 1, thereby telescoping the plunger mechanism into the multiple -bulbous bellows with the plunger actuating head 28 seated against the outer end of the fountain pen barrel I to provide a finished construction. 'Ihe telescoping arrangement' of the plunger stem, into the billbous bellows, conserves space and permits the length of the main body of the fountain pen to be shortened without any sacrifice of the ink capacity of the fountain pen. I'iie telescoping arrangement of the filling unit mechanism also obviates the necessity of providing a closure c ap at the end of the barrel opposite the ink guard 3.

Referring to Figure 3, a modified form `of filling unit is disclosed for association -with one end of a fountain pen barrel I. In the modified construction, a multiple or double bulb structure similarto that illustrated in Figures 1 and 2 is disclosed, and like partsfare designated by correspending reference numerals. Molded or otherwise rigidly secured in the outer end ofthe large bulb section I I is a bushing 29 which is internally threaded at 30. slidably projecting through the bushing 2l is a smooth plunger stem 3| `having formed or rigidly secured on the inner end thereof an enlarged exteriorly threaded head 82, which, when the plunger stem 3| is pulled outwardly and is rotated, is adapted to cause the threaded head 32 to thread into locking engagel ment with the interiorly threaded surface 3U of the bushing 28 to produce alternate collapsing and expanding cf the double bulbous structure. when theplunger mechanism is operated to cause filling of the fountain pen. Secured on the outer end of the plungerstem 3| vis an operating head or cap 38 formed with aninteriorly threaded 'loI , l y 2,119,196 opening 3l in the inner end thereof. The plunger stern 3l also slidably projects through a 4closure plug or bushing 35 which is formed with an exteriorlyv threaded shank 36 which threads into the interiorly threaded portion I 9- of the` ink barrel I to hold the closure plug or bushing or cap 33 is adapted to be threaded downwardly thereon to hold the plunger mechanism in closed position with the plunger stem released fromthe bushing 29 and telescoped downwardly into the double bulbous bellows forming part of the i111-l -in'g unit. To iill the `fountain pen,A it is only necessary to unthread the plunger cap 33 from the collar 31 and thread the plunger head 32' into the interiorly threaded bushing 29. The pen point end of the fountain penis then engaged in a supply of ink, and the plunger stem is reciprocated causing operation of the double bulbous structure to cause ink tobe d'rawn into the fountain pen barrel through the intake tube 6 to ll the ink chamber 8 of the fountain pen..

It will. of course, be understood that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by thescope of the ap'- pended claims. i

I claim as my invention:

means therein defningan annular seat, a filler unit in said barrel having a base seated on ,said seat, said ller unit comprising a multiple type bulbous structure of resilient rubber, or the like, and a plunger means, when in n'ormal closed position having a' telescoping engagement with the bulbous structure, and when in an operating position having a connection with the bulbous structure to operate the same with the reciprocation of the plunger means to fill the barrel.

2. A fountain pen comprising a barrel having a seat in one end thereof, a feed bar and pen point engaged in the opposite end of the barrel, an intake tube connected with the feed bar and disposed withn the barrel; a rubber-like bulbous' structure in said barrel seated on said seat, and

a plunger mechanism normally projecting into the bulbous structure and adapted to be projected out of the end of the barrel and connected with the bulbous structure to cause operation of the bulbous structure and filling of the fountain pen barrel when the reciprocated. t

3. A fountain pen comprising an elongated barrel having an annular seat formed in one end thereof, a section at the opposite-end of the jecting through the ink guard and into said section, an intake tube secured in the inner end of A the feed bar and projecting through the. barrel to within a short distance of the annular seat, a iiller unit engaged in the opposite end. of the fountain pen barrel and seated on said seat, said iiller unit comprising a resilient open bulbous structure of rubber or the like, a plunger stern longitudinally adjustable through the. bulbous structure; means for releasably locking the plunger stem with the bulbousv structure when the plunger stem is in outwardly projecting posi- 1. A fountain pen comprising a barrel having i plunger mechanism is tion with respect to the fountain pen barrel. and a closure secured in the end of the barrel adiacent the bulbous structure and having the plunger stem slidably projecting therethrough to permit reciprocation thereof and 'operation of the bulbous structure to cause filling of thefountain Den. v j l 4. A fountain pen comprising la barrel having a section on-one end thereof. a pen point in the section, a feed bar inthe section in contact with i the pen point, ran intake tube engaged Vin the feed bar and projecting into the fountain pen barrel to -within a short distance of the end of the ink chamber of the fountain penbarrel, a filling unit in theouter end of the fountain pen vbarrel and including. a multiple type bulbous structure open at both ends, an operating plunger v barrel into a position to permit reciprocation thereof and operation of the bulbous structure to cause filling of the vfountain peni,

5. A fountain pen comprising abarreluhaving 1 a section at one end thereof; li/closure member in the opposite end of the1 barrel, a pen point and a feed bar engaged in the section, an intake tube havfng one end thereof engaged in the feed bar and projecting.' longitudinally through :ne barrel to withina short'distance ofthe end of the ink chamber of the-barrel, a iiller unit .'se-

cured in the outer end ofthe fountain pen barrel vadjacent the barrel'closure member, and including a compressible bulbous structure, an operating plunger normally projecting axially into the bulbous structure, an o rating head on the op- 'erating plunger disposed to the outsid'e ofthe plunger is projected outwardly through the barrel closure member to permit operation of the vbulbous structureto ,cause lling of the fountain pen barrel when the operating plunger isreciprocated by means of the plunger head.

6. In a fountain pen a filler unit forinsertion in`one end of the fountain pen barrel, said filler unit comprising a bulbous rubber-like structure including a base secured inthe fountain pen barrel, and a plunger means projectible through one end of the fountain pen barrel and movable into a position to project into the bulbous structure when the lling unit is not in use, and projectible out of thev end of the fountain pen barrel with the innerend thereof including means forjconnection with the bulbous structure to cause operation thereof with the reciprocation of the vplunger means to fill the fountain pen.

7. vIn a fountain pen,- a filler unit comprising a collapsible bulbous structure secured in one end of thevfountain pen barrel, a bushing for closing v Y one end of the barrel, an operating stem projecting through the bushing and into the bulbous structure Ywhen the filler unit is not in use, said stem .movable outwardly with respect 'to the bulbous structure to project out of the'. end of the fountain pen barrel, and. means for locking the inner end of the stem with the outer end of the bulbous structure when' the stem is in a projecting position, to cause filling of the fountain pen barrel when the stem is reciprocated to cause operation of the bulbous structure.

8. In a fountain pen, a filler unit secured in one end of the barrel of the fountain pen and comprisinga bulbous structure open at both ends, an apertured packing base on one end of the bulbous structure and secured in the fountain pen barrel in tightisealing contact therewith, a bushing secured in the opposite open end of the bulbous`V structure, stem means projecting through the 'bushing into the bulbous structure, said stem means having the outer end thereof projecting through a closure in one end of the fountain pen barrel, and coacting means on -the' stem means and thebushing for connecting the same one to the other when the stem means is moved outwardly into an operating position for reciprocation to actuate the bulbous structure to flll the fountain pen.

9. A fountain den including in combination a barrel having a shoulder formed therein, a closure plug closing one end of said barrel, a bulbous filling unit in the barrel adjacent the closure plug, a packing base integrally formed on the bulbous structure and seated against said shoulder in sealing contact with the interior surface of thebarrel, a bushing engaged inlthe opposite end of the bulbous structure, a plunger stem projecting through the barrel closure 'plug and through the bushing into the bulbous structure,'an operating head on the outer end of the l plunger stem for seating against the end of the barrel and against the barrel closure plug when the plunger stem is in an inoperative position projecting into the bulbous structure, and means on the plunger stem and said bushing for coaction with one another when the plunger stem is moved into an outwardly projecting operating position with respect to the barrel and the closure plug Vthereof to permit reciprocation of the plunger stem by means of the plunger head and actuation of the bulbous structure to cause filling y of the fountain pen.

10. In a fountain pen, a filler unit comprising a bulbous rubber-like structure secured in one end of the fountain pen barrel, and plunger -fmeans normally Vprojecting into the barrel and -into the bulbous structure and movable into a position projecting from the barrel to permit operation of the plunger means and the bulbous structure to cause filling of the fountain pen.

1l. In a fountain pen, a filler unit secured in one end of the fountain pen barrel and comprisling a bulbous rubber-like structure, aplunger means normally projecting into the barrel and into the bulbous structure and movable outwardly with respect to the bulbous structure to project from the fountainpen barrel. and means for locking the plunger means with respect to .the

.bulbous structure when the plunger means is in I its outermost position to permit operation of the bulbous 'structure and filling of the when the plunger means is actuated.

12. In a fountain pen, a filler unit secured in one end of the fountain pen barrel and comprising a bulbous rubber-like structure, a grooved packing base integrally formed on one end of the bulbous structure, an apertured disc seated in the grooved base to expand the same into sealing contact with the interiory of the fountain pen barrel, a stem member projecting into the founfountain pen tain pen barreland into the bulbous structure, an

operating head on the outer end of the stem member normally seated against the end of the -fiiler unitk comprising a bulbous structure,

fountain pen barrel when the stem member is in its innermost position, and means on the stem the grooved base to expand the same into sealing contact with the interior of the fountain pen barrel, an interiorly threaded bushing in the opposite end of the bulbous structure, an operating stem projecting into the end of the fountain pen barrel and into the bulbous structure, a head on the outer end of the operatingistem normally seated against the end of the fountain pen barrel, and thread means on the operating stem for threaded engagement with the interiorly threaded bushing of the bulbous structure to cause operation of the bulbous structure with the reciprocation of the stern member to fill the fountain pen, said stem 'member after a lling operation being rotatable to release the threaded means of the stem member from engagement with the bushing for the return of the stem member to normal position to project into the bulbous structure without actuating the s ame.

14. A fountain pen including in combination a filler unit comprising a rubber-like filling means,

a grooved apertured base connected therewith, an apertured disc seated in the groove of said base to expand the same into sealing contact with the interior of the fountain pen barrel, a

stem longitudinally projectible into one end of the fountain pen barrel and into one end of the filling means within the barrel, a valve member on.the inner end of said stem for closing theaperture in said disc when the stem is in its innermost position, and means for connecting the stem with the outer end portion of the filling means when the stem is moved into an outwardly projecting position to permit operation of the :filling means and filling of the fountain pen when the stem is actuated.

15. A fountain pen niling unit comprising a bellows-like section, an apertured and grooved base formedbon one end thereof, an apertured disc engaged in the groove of said base, a bushing member in said bellows-like section opposite said base, a stem s lidably projectible through the bushingy tp project into the bellows-like section, a valve memberon the inner end of said stem for seating in the aperture of said disc when the stem is in its innermost position, a Vvalve seat formed in the "bellows-like section near sai gasket to coact with the valve member when the rstern is moved into an outermost operating position projecting from the bellows-like section, and.

means for releasably locking the stem with the bushing when the stem is lin its outermost position for filling the fountain pen by repeatedly collapsing the bellows-like section when the stem is actuated.

16 A fountainepen including in combination a.

a grooved apertured base formed on one end thereof, an apertured disc seated in the-groove of said base, a plunger stem longitudinally projectible into the opposite end of the bulbous structure, a

.head on the outer end of the plunger stem-for stem for connecting they same with the bulbous structure when the plunger stem is moved into an outwardly projecting position for actuating the bulbous structure to cause filling of the fountain pen.

17. A fountain pen including in combination a filler unit comprising a bulbous structure, an

apertured and grooved base l`formed on one end thereof, an apertured disc in said groove of the base` a threaded bushing in the oppositeend of the bulbous structure, a threaded stem normally projecting axially into the bulbous structure and movable outwardly with respect thereto to cause operation of the bulbous structure to ll the fountain pen when the stem is actuated to collapse and release the bulbous structure.

18. A fountain pen including in combination a ller unit comprising a bulbous structure, an

apertured and grooved base formed on one end thereof, an apertured disc seated' in the groove of said base, a threaded bushing secured inthe opposite end of the bulbous structure, a threaded stem engaged inthe threadedbushing for longitudinal axial movement with respect to the bulbous structure, an operating head on the outer end of the threaded stem, a valve seat formed in the bulbous structure adjacentthe threaded bushing, and a double valve on the inner end of the threaded bushing, and a double valve on the inner end of the threaded stem for seating in the -aperture of said disc when the threaded stem is in its innermost position and for seatingI against the valve seat in the bulbous structure when the threaded stem is moved into its outermost operating position to permit a lling operation of the lling unit by repeatedly collapsing the bulbous structure with the operation of the threaded stern. 1

19. A fountain. pen lling unit comprising a bulbous structure, a passaged base formed on one end thereof and having a4 groove therein, an apertured disc engaged in said groove, a threaded bushing secured in the opposite end of the bulbou's structure, a plunger stem projecting through the bushing, a threaded head on the inner end of the plunger stern for threaded engagement with the bushing when the plunger stem is moved into an outwardly. projecting position for operating the bulbous structure, and an actuating head on the outer projecting end of the plunger stem.

20. A fountain pen ijlling unit comprising a bulbous structure, a plunger mechanism having a telescopingengagement therewith and normally projecting axially into the bulbous structure when the filling unit is not in use, and means for connecting the plunger mechanism with the bulbous structure when the plunger is in a projecting position and is actuated for collapsing the bulbous structure for iilling the fountain pen.

` SOLOMON M. SAGER. 

